kernel/linux.git/drivers/char/ipmi/Makefile, branch v6.18.21

ipmi: Add Loongson-2K BMC support

2025-09-16T15:15:54+00:00

This patch adds Loongson-2K BMC IPMI support. According to the existing design, we use software simulation to implement the KCS interface registers: Stauts/Command/Data_Out/Data_In. Also since both host side and BMC side read and write kcs status, fifo flag is used to ensure data consistency. The single KCS message block is as follows: +-------------------------------------------------------------------------+ |FIFO flags| KCS register data | CMD data | KCS version | WR REQ | WR ACK | +-------------------------------------------------------------------------+ Co-developed-by: Chong Qiao Signed-off-by: Chong Qiao Reviewed-by: Huacai Chen Acked-by: Corey Minyard Signed-off-by: Binbin Zhou Message-ID: <8f9ffb6f0405345af8f04193ce1510aacd075e72.1756987761.git.zhoubinbin@loongson.cn> Signed-off-by: Corey Minyard

char: ipmi: handle HAS_IOPORT dependencies

2024-04-17T19:55:04+00:00

In a future patch HAS_IOPORT=n will disable inb()/outb() and friends at compile time. We thus need to add this dependency and ifdef sections of code using inb()/outb() as alternative access methods. Acked-by: Corey Minyard Co-developed-by: Arnd Bergmann Signed-off-by: Arnd Bergmann Signed-off-by: Niklas Schnelle Message-Id: <20240404104506.3352637-2-schnelle@linux.ibm.com> Signed-off-by: Corey Minyard

ipmi: ssif_bmc: Add SSIF BMC driver

2022-10-17T14:51:26+00:00

The SMBus system interface (SSIF) IPMI BMC driver can be used to perform in-band IPMI communication with their host in management (BMC) side. Thanks Dan for the copy_from_user() fix in the link below. Link: https://lore.kernel.org/linux-arm-kernel/20220310114119.13736-4-quan@os.amperecomputing.com/ Signed-off-by: Quan Nguyen Message-Id: <20221004093106.1653317-2-quan@os.amperecomputing.com> Signed-off-by: Corey Minyard

ipmi:ipmb: Add initial support for IPMI over IPMB

2021-10-05T11:54:17+00:00

This provides access to the management controllers on an IPMB bus to a device sitting on the IPMB bus. It also provides slave capability to respond to received messages on the bus. Signed-off-by: Corey Minyard Tested-by: Andrew Manley Reviewed-by: Andrew Manley

ipmi: kcs_bmc: Add serio adaptor

2021-06-22T00:50:28+00:00

kcs_bmc_serio acts as a bridge between the KCS drivers in the IPMI subsystem and the existing userspace interfaces available through the serio subsystem. This is useful when userspace would like to make use of the BMC KCS devices for purposes that aren't IPMI. Signed-off-by: Andrew Jeffery Message-Id: <20210608104757.582199-12-andrew@aj.id.au> Reviewed-by: Zev Weiss Signed-off-by: Corey Minyard

ipmi: kcs_bmc: Decouple the IPMI chardev from the core

2021-06-22T00:50:22+00:00

Now that we have untangled the data-structures, split the userspace interface out into its own module. Userspace interfaces and drivers are registered to the KCS BMC core to support arbitrary binding of either. Signed-off-by: Andrew Jeffery Message-Id: <20210608104757.582199-9-andrew@aj.id.au> Reviewed-by: Zev Weiss Signed-off-by: Corey Minyard

ipmi: kcs_bmc: Split out kcs_bmc_cdev_ipmi

2021-06-22T00:50:13+00:00

Take steps towards defining a coherent API to separate the KCS device drivers from the userspace interface. Decreasing the coupling will improve the separation of concerns and enable the introduction of alternative userspace interfaces. For now, simply split the chardev logic out to a separate file. The code continues to build into the same module. Signed-off-by: Andrew Jeffery Reviewed-by: Zev Weiss Message-Id: <20210608104757.582199-5-andrew@aj.id.au> Signed-off-by: Corey Minyard

Add support for IPMB driver

2019-06-10T19:47:10+00:00

Support receiving IPMB requests on a Satellite MC from the BMC. Once a response is ready, this driver will send back a response to the BMC via the IPMB channel. Signed-off-by: Asmaa Mnebhi Acked-by: vadimp@mellanox.com Message-Id: <319690553a0da2a1e80b400941341081b383e5f1.1560192707.git.Asmaa@mellanox.com> [Move the config option to outside the ipmi msghandler, as it's not dependent on that. Fixed one small whitespace issue.] Signed-off-by: Corey Minyard

ipmi: Consolidate the adding of platform devices

2019-02-22T13:12:41+00:00

It was being done in two different places now that hard-coded devices use platform devices, and it's about to be three with hotmod switching to platform devices. So put the code in one place. This required some rework on some interfaces to make the type space clean. Signed-off-by: Corey Minyard

ipmi: add an NPCM7xx KCS BMC driver

2018-04-18T15:23:12+00:00

This driver exposes the Keyboard Controller Style (KCS) interface on Novoton NPCM7xx SoCs as a character device. Such SOCs are commonly used as a BaseBoard Management Controller (BMC) on a server board, and KCS interface is commonly used to perform the in-band IPMI communication between the server and its BMC. Signed-off-by: Avi Fishman Signed-off-by: Haiyue Wang Signed-off-by: Corey Minyard